CN112772027A - Multifunctional whole-rod type cassava precision seeder - Google Patents

Abstract

The invention relates to a multifunctional whole-rod cassava precision seeder, which comprises a rack, a rotary tillage ridging mechanism, a fertilizing mechanism, a stem cutting mechanism, two posture adjusting mechanisms, two standing mechanisms, two clamping and conveying mechanisms and two soil covering mechanisms, wherein the rotary tillage ridging mechanism is arranged on the rack; the bottoms of the two sides of the frame are provided with rollers for walking; the rotary tillage ridging mechanism is arranged at the front part of the frame; the fertilizing mechanism is arranged in the middle of the rack; the stem cutting mechanism is arranged at the top of the rear end of the frame; the two posture adjusting mechanisms are arranged on the frame and correspond to the lower part of the stem cutting mechanism; each standing mechanism is arranged on the rack and corresponds to the front of the corresponding posture adjusting mechanism; each clamping and conveying mechanism is arranged on the rack and corresponds to the rear of the corresponding posture adjusting mechanism; each soil covering mechanism is arranged at the bottom of the rack and corresponds to the rear of the corresponding clamping and conveying mechanism. The invention has the beneficial effects that: the mechanical sowing operation improves the cassava planting efficiency, the uniformity and the accuracy of seed sowing, replaces manual auxiliary seed feeding, and saves time and cost.

Description

Multifunctional whole-rod type cassava precision seeder

Technical Field

The invention relates to the field of agricultural engineering, in particular to a multifunctional whole-rod cassava precision seeder.

Background

Besides being edible, cassava can be used for feeding and developed and utilized industrially, and becomes a main biological energy resource in recent years. As the demand of cassava on development of various industries is increased, the yield of the cassava planted in China is not enough to meet the domestic demand, and a large amount of cassava stems and cassava starch need to be imported from foreign countries. The method for solving the problem of insufficient supply and demand of cassava is to enlarge the planting area and improve the cassava yield. At present, the cassava planting in China is basically finished manually, so that the efficiency is low, and the labor cost is increased. Moreover, the cassava planting period coincides with the sugarcane planting period, the labor force is dispersed, the cost is greatly increased, the expansion of the cassava planting area is not facilitated, and the implementation of a renewable energy strategy and the industrial development of cassava are hindered. Therefore, the development of the mechanized planting technology is an effective means for solving the problem, the research status and development trends of the mechanized planting technology of the cassava at home and abroad are known, and the method has important significance for the industrialized development of the cassava.

The single-row, double-row or multi-row planting machines with different models are developed in Brazil, Mexico, Nigeria, Malaysia and other countries, all of which are the real-time stem-cutting and flat-laying type seeds, and a plurality of workers need to feed cassava seed stems in an auxiliary way. Cassava planted locally in Thailand is habitually planted vertically and obliquely, but not horizontally. In 2005, Lungkapin developed 1 cassava planter, requiring 1 worker to drive in front, followed by 3 workers to manually plant vertically. The planter needs more labor force, thereby increasing the labor cost. In recent years, different types of cassava planting machines have appeared in China, such as: 2CM-2 ridge culture type cassava planter, pre-cutting type cassava planter, 2CMS-2 type cassava combined planter, 2BMSU/2X rotary cutting ditching type cassava seeder and the like. Most of the cassava planting machines are flat type planting. Although the flat planting mode has the characteristics of convenience, labor saving, time saving, easy operation, low cost, and easy sowing and harvesting both manually and mechanically; however, the single plant has a small number of potatoes, difficult germination and poor wind resistance. Therefore, the vertical planter which has more potatoes and better wind and drought resistance compared with the horizontal planting in China should be developed. The cassava planting has important practical and strategic significance for guaranteeing the grain safety and relieving the contradiction between energy supply and demand. At present, the cassava production mechanization degree is low, the development of the cassava industry in China is restricted, the cassava planting area and the cassava planting level are greatly improved for improving the domestic cassava production level and economic benefit, and the planting mechanization is imperative.

In order to relieve the problem of labor shortage and reduce the production cost so as to promote large-scale and standardized planting, mechanical cassava planting needs to be vigorously developed and the planting mode of cassava needs to be changed, the whole cassava seed stems are placed into a stem cutting mechanism for cutting, the cassava seed stems fall into a cassava seed box, then the seed stems are moved into a posture adjusting mechanism by a seed selecting wheel, the cassava is changed from tilting to erecting, and continuous, accurate and controllable seed discharging is realized. Therefore, the cassava seeder with simple structure and reliable performance is developed to improve the seeding productivity, reduce the labor intensity and improve the total output of cassava.

Disclosure of Invention

In conclusion, in order to overcome the defects in the prior art, the invention aims to provide a multifunctional whole-rod cassava precision seeder.

The technical scheme for solving the technical problems is as follows: a multifunctional whole-rod cassava precision seeder comprises a rack, a rotary tillage ridging mechanism, a fertilizing mechanism, a stem cutting mechanism, two posture adjusting mechanisms, two standing mechanisms, two clamping and conveying mechanisms and two soil covering mechanisms; the bottoms of the two sides of the rack are provided with rollers for walking; the rotary tillage ridging mechanism is arranged at the front part of the frame, and turns and piles soil into ridges, and then two longitudinal seed ditches are formed in the ridges; the fertilizing mechanism is arranged in the middle of the rack and intermittently conveys fertilizers to the seed furrows; the stem cutting mechanism is arranged at the top of the rear end of the rack and is used for cutting two cassava into two horizontal seed stems and conveying the seed stems downwards; the two posture adjusting mechanisms are arranged on the rack and correspond to the lower part of the stem cutting mechanism, and are used for bearing two horizontal seed stems and adjusting the two horizontal seed stems into an inclined shape above the two seed ditches respectively; the two standing mechanisms and the two posture adjusting mechanisms are arranged in a one-to-one correspondence manner, each standing mechanism is arranged on the rack and corresponds to the front of the corresponding posture adjusting mechanism, and the standing mechanisms push the oblique seed stems of the corresponding posture adjusting mechanisms backwards into vertical shapes; the two clamping and conveying mechanisms are arranged in one-to-one correspondence with the two posture adjusting mechanisms, and each clamping and conveying mechanism is arranged on the rack and corresponds to the rear part of the corresponding posture adjusting mechanism and is used for clamping the vertical seed stems on the corresponding posture adjusting mechanism, conveying the vertical seed stems backwards for a preset distance along the corresponding seed ditches and then releasing the seed stems, so that the seed stems are vertically inserted into the positions, in which fertilizers are applied, in the corresponding seed ditches; the two soil covering mechanisms and the two clamping and conveying mechanisms are arranged in a one-to-one correspondence mode, each soil covering mechanism is arranged at the bottom of the rack and corresponds to the rear of the clamping and conveying mechanism, and soil on two sides of the corresponding seed furrow is backfilled along with the forward walking of the rack.

The invention has the beneficial effects that: can ensure that the ridge and the seed furrow are complete, accurate fertilization to accomplish cassava seed stem and transfer to erectly by the slope, accurate centre gripping seed stem is carried to the seed furrow, and mechanized seeding operation improves the homogeneity and the accuracy nature of cassava planting efficiency, seed metering, replaces artifical supplementary feeding, reduces intensity of labour, has saved time and cost, has the value of practical popularization.

On the basis of the technical scheme, the invention can be further improved as follows:

further, the rotary tillage ridging mechanism comprises a shield and a base; the rotary tillage shaft is arranged on the protective cover in a transverse rotatable manner, and a plurality of rotary tillage pieces for turning soil into ridges through rotation are axially arranged on the rotary tillage shaft; the base is fixed on the frame and corresponds to the position behind the shield, and is of an inverted U-shaped structure which grinds the ridges formed by the stacked rotary tillage parts flat; furrow openers for opening two longitudinal seed furrows on the ridges along with the forward walking of the rack are vertically and downwards arranged on two sides of the base;

the rotary tillage part comprises a rotary tillage cutter head and rotary tillage cutters; the rotary tillage cutter head is of a cross structure with four connecting ends, is axially and obliquely fixed on the rotary tillage shaft relative to the rotary tillage shaft, and the inclination directions of the rotary tillage cutter heads positioned at two sides of the middle point of the axis of the rotary tillage shaft are opposite; each rotary tillage blade disc's link all is fixed with one the rotary blade, the rotary blade is the circular arc structure of buckling, and is same on two adjacent links on the rotary blade disc the direction of buckling of rotary blade is opposite.

The beneficial effect of adopting the further scheme is that: realize turning over the soil and pile into the ridge to two sets of rotary tillage blade discs set up relative rotary tillage axle slope, can assemble the soil to the intermediate position of rotary tillage axle when making the rotary blade rotate.

Further, the fertilizing mechanism comprises a fertilizer box, a hopper, a discharging box, a bent pipe and a discharging pipe; the fertilizer box is fixed above the middle part of the rack, and fertilizer is placed in the fertilizer box; the two hoppers are respectively fixed on two sides of the bottom of the fertilizer box and communicated with the interior of the fertilizer box; the discharge box is arranged at the position below the position between the two hoppers, two feed inlets are arranged on the upper end surface of the discharge box, two discharge outlets are arranged on the lower end surface of the discharge box, and the two discharge outlets are respectively arranged opposite to the two feed inlets up and down; the bent pipes are arranged in one-to-one correspondence with the hoppers, one end of each bent pipe is communicated with the corresponding hopper, and the other end of each bent pipe extends horizontally for a preset distance and then extends downwards and is communicated with one of the feed inlets; the upper end of each discharging pipe is communicated with one discharging hole, and the other end of each discharging pipe extends downwards to the upper part of one seed ditch in an inclined mode towards the outer side of the rack;

a shunting screw rod for conveying fertilizer inside the fertilizer box into the two hoppers is rotatably arranged in the fertilizer box, and a material conveying screw rod for conveying the fertilizer inside the hopper into the discharge box through the corresponding bent pipe is rotatably arranged in each hopper; a baffle disc is rotatably arranged in the discharge box, and two through holes for communicating the discharge port and the feed port which are opposite up and down are formed in the baffle disc; a sheave mechanism for intermittently driving the baffle disc to rotate is arranged outside the discharge box;

the sheave mechanism comprises a sheave and a notch drive plate; the baffle disc is rotatably arranged in the discharging box through a vertical grooved pulley shaft, and the lower end of the grooved pulley shaft extends to the lower part of the discharging box; the grooved pulley is fixedly sleeved at the lower end of the grooved pulley shaft, the notch drive plate is rotatably arranged on the rack and corresponds to the outer side of the grooved pulley, and the grooved pulley is pushed by the gap of the notch drive plate which continuously rotates.

The beneficial effect of adopting the further scheme is that: realize that the fertilizer is conveyed to the seed furrow intermittently.

Further, the stem cutting mechanism comprises a cutting push rod, a cutting motor, a cutting box and a transmission device; the cutting push rod is vertically arranged at the top of the rear end of the rack in a vertically sliding manner; the cutting motor is fixed at the lower end of the cutting push rod, and a cutting disc is sleeved at the output end of the cutting motor; the cutting box is fixed on the rack and corresponds to the lower part of the cutting disc, two cutting stations are arranged in the cutting box, and two cutting holes communicated with the cutting stations are formed in the side wall of the cutting box; the two posture adjusting mechanisms are respectively arranged on the rack and correspond to positions below the two cutting stations, and the bottom of the cutting box is opened so that the two cutting stations are respectively communicated with the two posture adjusting mechanisms;

the transmission device is arranged on the frame at a position corresponding to the upper end of the cutting push rod and connected with and drives the cutting push rod to move up and down repeatedly.

The beneficial effect of adopting the further scheme is that: the two cassava are simultaneously cut into two horizontal seed stems and conveyed downwards.

Further, the transmission device comprises a pushing gear and a transmission gear; a cutting chute for the cutting push rod to slide up and down is arranged on the rack corresponding to the middle part of the cutting push rod; a pushing groove is horizontally formed in the upper end of the cutting push rod, the pushing gear is rotatably mounted on the rack and corresponds to the upper end of the cutting push rod, and a pin shaft clamped into the pushing groove is arranged on the side part of the pushing gear and close to the edge; the transmission gear is rotatably arranged on the rack and is meshed with and drives the pushing gear to rotate.

The beneficial effect of adopting the further scheme is that: the cutting disc is driven.

Further, the posture adjusting mechanism comprises a seed box, a buffer part, a seed selecting wheel and a seed selecting frame; the seed box is arranged on the rack and corresponds to the position below the corresponding cutting station, the top of the seed box is opened to be communicated with the corresponding cutting station, and a seed outlet matched with the seed stem is horizontally arranged at the bottom of the seed box; the buffer piece is rotatably arranged at the upper part in the seed box and is used for buffering the falling seed stems; the seed selection wheel is rotatably arranged on the rack and corresponds to the position below the seed outlet, the seed selection frame is fixed on the rack and corresponds to the position below the seed selection wheel, and the seed selection wheel is rotated to take the seed stems falling from the seed outlet one by one and place the seed stems on the seed selection frame in an inclined manner;

the buffer piece comprises a buffer shaft and four buffer plates; the buffer shaft is rotatably arranged at the upper part in the seed box, four buffer plates are opposite to each other in pairs to form a cross structure and are fixed on the buffer shaft, and a single falling seed stem is received and buffered between two adjacent buffer plates;

the seed selecting wheel is of a cylindrical structure, and the side wall of the seed selecting wheel is axially provided with clamping grooves for clamping seed stems falling from the seed outlet one by one; the seed selection frame is of a fan-shaped frame structure, and a posture adjusting inlet which enables seed stems clamped by the clamping grooves to fall into the seed selection frame and be clamped in the seed selection frame in an inclined mode is horizontally arranged on the upper side of the seed selection frame; a posture adjusting outlet which is used for conveying the vertically pushed seed stems to the corresponding clamping and conveying mechanism is vertically arranged at the front side of the seed selecting frame; the bottom of the posture adjusting outlet is provided with a baffle, and the bottom of the baffle is rotatably connected with the bottom of the posture adjusting outlet; and the side wall of the seed selecting frame is provided with an air cylinder, and the output end of the air cylinder is connected with the side part of the baffle.

The beneficial effect of adopting the further scheme is that: finishing the posture adjustment of the cassava, namely adjusting the seed stems from horizontal to inclined.

Further, the erection mechanism comprises an erection plate, an erection push rod and a guide rod; the righting plates are positioned in the corresponding seed selecting frames; the upright push rod is of a Z-shaped structure, the upper part of the upright push rod can be arranged on the rack in a front-back sliding manner and corresponds to the position of the upper side in front of the corresponding seed selecting frame, and the lower part of the upright push rod freely penetrates into the corresponding seed selecting frame backwards and is connected with the upright plate; the upright supporting plate is a semi-arc block structure which is bent forwards and is matched with the seed stem and is vertically arranged in the axial direction, wraps the rear side of the lower part of the seed stem and pushes the inclined seed stem backwards into a vertical shape at the posture adjusting outlet under the driving of the upright supporting push rod;

the front part and the rear part of the rack corresponding to the upper part of the erection push rod are respectively provided with an erection sliding groove for the erection push rod to slide back and forth; an annular guide rail is arranged on the outer side of the middle position of the upper part of the erection push rod; one end of the guide rod is hinged to the middle of the upper portion of the erection push rod and corresponds to the position inside the guide rail, and the other end of the guide rod can be slidably arranged in the guide rail to limit the erection push rod to slide back and forth.

The beneficial effect of adopting the further scheme is that: the cassava is righted, namely the seed stems are adjusted to be vertical from inclination.

Further, the clamping and conveying mechanism comprises two shells and two chains; the two shells are relatively fixed on the rack and correspond to the positions of the corresponding posture adjusting outlets, the front ends of the two shells are positioned at two sides of the corresponding posture adjusting outlets, and the rear ends of the two shells extend backwards for a preset distance; a driven gear and a driving gear are respectively rotatably arranged in each shell in a front-back mode, and the driven gear and the driving gear in the same shell are connected through a chain; a plurality of elastic clamping pieces extending out of the corresponding outer side of the shell are uniformly arranged on each chain, and the elastic clamping pieces on the two chains are arranged in a one-to-one correspondence manner;

the seed selection frame is provided with openings corresponding to two sides of the posture adjusting outlet, and the two corresponding elastic clamping pieces rotate backwards along with the chain and respectively enter the posture adjusting outlet through the two openings and clamp the vertical seed stems to be conveyed backwards along the corresponding seed ditches.

The beneficial effect of adopting the further scheme is that: the seed stem is vertically inserted into the position where fertilizer is applied in the seed ditch.

Further, the soil covering mechanism comprises two discs; the two disks are respectively and oppositely fixed at the bottom of the rack and correspond to the rear parts of the clamping and conveying mechanisms, the distance between the two disks is gradually reduced from front to back, and then the soil on two sides of the seed ditch is pushed into the seed ditch to be backfilled along with the forward walking of the rack.

The beneficial effect of adopting the further scheme is that: the soil on the two sides of the seed ditch is backfilled.

Further, the device also comprises a tractor; the front end of the frame is connected to the rear end of the tractor, and the output shaft of the tractor is respectively connected with and drives the rotary tillage ridging mechanism, the fertilizing mechanism, the stem cutting mechanism, the posture adjusting mechanism, the standing mechanism and the clamping and conveying mechanism.

The beneficial effect of adopting the further scheme is that: the traction of the machine frame and the driving of the related mechanism are realized.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is an enlarged view A of FIG. 1;

FIG. 3 is a structural view of the rotary tillage ridging mechanism;

FIG. 4 is a bottom view of the rotary tillage ridging mechanism;

FIG. 5 is a front view of the rotary tillage member mounted on the rotary tillage member;

FIG. 6 is a block diagram of the fertilizer mechanism (fertilizer box partially removed);

FIG. 7 is a view of the connection of the discharge box, the catch tray and the geneva mechanism (the discharge box with the top removed);

FIG. 8 is a structural view of the stem cutting mechanism;

FIG. 9 is a diagram of the connection structure of the posture adjusting mechanism and the centering mechanism;

FIG. 10 is a view of the attitude adjustment mechanism of FIG. 9 with parts such as baffles removed;

FIG. 11 is a diagram of the connection structure of the stem cutting mechanism, the posture adjusting mechanism and the righting mechanism;

FIG. 12 is a schematic view of the cylinder pushing the baffle flat;

FIG. 13 is a view showing the construction of the grip conveying mechanism;

FIG. 14 is a view of FIG. 13 with a housing and the like removed;

FIG. 15 is a schematic view of the clamping mechanism clamping the seed stem after righting

FIG. 16 is a structural view of a soil covering mechanism;

FIG. 17 is a schematic view before righting the seed stem;

FIG. 18 is a schematic view showing the seed stems after being straightened;

fig. 19 is a structural view of a seat provided on a frame.

In the drawings, the components represented by the respective reference numerals are listed below:

1. frame, 2, roller, 3, seed stem, 4, shield, 5, base, 6, rotary tillage shaft, 7, furrow opener, 8, rotary tillage disk, 9, rotary tillage cutter, 10, fertilizer box, 11, hopper, 12, discharge box, 13, elbow, 14, discharge pipe, 15, feed inlet, 16, discharge outlet, 17, diversion screw, 18, plastic screw, 19, baffle disk, 20, through hole, 21, sheave, 22, notch dial, 23, cutting push rod, 24, cutting motor, 25, cutting box, 26, cutting disk, 27, cutting hole, 28, pushing gear, 29, transmission gear, 30, cutting chute, 31, pushing groove, 32, buffer, 33, soil covering mechanism, 34, seed box, 35, 36, seed selecting wheel, 37, seed selecting rack, 38, clamping groove, 39, baffle, 40, air cylinder, 41, standing plate, 42, standing push rod, 43, guide rod, 44, 43, guide rod, 6, seed selecting plate, 37, seed selecting rack, 38, clamping groove, cutting mechanism, soil covering mechanism, and the, The device comprises a standing chute, 45, a guide rail, 46, a shell, 47, a chain, 48, a driven gear, 49, a driving gear, 50, an elastic clamping piece, 51, a disc, 52, a clamping and conveying mechanism, 53, a tractor, 54, a rotary tillage ridging mechanism, 55, a fertilizing mechanism, 56, a stem cutting mechanism, 57, a posture adjusting mechanism, 58, a standing mechanism, 59, a seat, 60 and a grooved pulley mechanism.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, the multifunctional whole-rod cassava precision seeder comprises a frame 1, a rotary tillage ridging mechanism 54, a fertilizing mechanism 55, a stem cutting mechanism 56, two posture adjusting mechanisms 57, two standing mechanisms 58, two clamping and conveying mechanisms 52 and two soil covering mechanisms 33. And rollers 2 for walking are arranged at the bottoms of the two sides of the rack 1. The rotary tillage ridging mechanism 54 is arranged at the front part of the frame 1, and turns and piles soil into ridges, and then two longitudinal seed ditches are formed in the ridges. The fertilizing mechanism 55 is arranged in the middle of the frame 1 and intermittently conveys fertilizer into the seed furrow. The stem cutting mechanism 56 is arranged at the top of the rear end of the frame 1 and cuts two cassava into two horizontal seed stems 3 which are conveyed downwards. The two posture adjusting mechanisms 57 are arranged on the frame 1 and corresponding to the lower part of the stem cutting mechanism 56, and are used for receiving the two horizontal seed stems 3 and adjusting the two horizontal seed stems 3 to be inclined above the two seed ditches respectively. The two standing mechanisms 58 and the two posture adjusting mechanisms 57 are arranged in a one-to-one correspondence manner, each standing mechanism 58 is arranged on the rack 1 and corresponds to the front of the corresponding posture adjusting mechanism 57, and the standing mechanism pushes the seed stems 3 inclined on the corresponding posture adjusting mechanism 57 backwards to be vertical. The two clamping and conveying mechanisms 52 are in one-to-one correspondence with the two posture adjusting mechanisms 57, and each clamping and conveying mechanism 52 is arranged on the rack 1 and corresponds to the rear of the corresponding posture adjusting mechanism 57 and is used for clamping the corresponding seed stem 3 on the posture adjusting mechanism 57, conveying the seed stem 3 backwards along the corresponding seed furrow for a preset distance and then releasing the seed stem 3, so that the seed stem 3 is vertically inserted into the corresponding seed furrow to be applied with fertilizer. Two earthing mechanism 33 and two centre gripping conveying mechanism 52 one-to-one sets up, each earthing mechanism 33 sets up frame 1 bottom and corresponding centre gripping conveying mechanism 52's rear, it is along with frame 1 walks forward backfills the soil of corresponding kind ditch both sides.

As shown in fig. 3 and 4, the rotary tillage ridger 54 includes a cover 4 and a base 5. The utility model discloses a soil tillage machine, including frame 1, guard shield 4, rotary tillage axle 6 is installed along horizontal rotatable on the guard shield 4, a plurality of rotary tillage pieces of piling up into the ridge through rotating are installed along the axial on rotary tillage axle 6 to the guard shield 4 is fixed the below of frame front portion. The base 5 is fixed on the frame 1 and corresponds to the position behind the protective cover 4, and is of an inverted U-shaped structure for leveling ridges formed by piling up the rotary tillage parts. Furrow openers 7 for opening two longitudinal seed furrows on the ridges along with the forward walking of the rack 1 are vertically and downwards arranged on two sides of the base 5. The rotary tillage part comprises a rotary tillage cutter head 8 and rotary tillage cutters 9. The rotary tillage blade disc 8 is a cross structure with four connecting ends, as shown in fig. 5, the rotary tillage blade disc 8 is opposite to the rotary tillage shaft 6, the rotary tillage shaft 6 is axially obliquely fixed on the rotary tillage shaft 6, and the rotary tillage blade disc 8 is positioned on two sides of the middle point of the axis of the rotary tillage shaft 6 and has opposite inclination directions. Preferably: the rotary tillage cutter head 8 is fixed on the rotary tillage shaft 6 with an axial inclination of 60 degrees relative to the rotary tillage shaft 6. Each the link of rotary tillage blade disc 8 all is fixed with one rotary blade 9, rotary blade 9 is the circular arc structure of buckling, and is same on two adjacent links on the rotary tillage blade disc 8 the direction of buckling of rotary blade 9 is opposite.

As shown in fig. 6, the fertilizing mechanism 55 comprises a fertilizer box 10, a hopper 11, a discharge box 12, an elbow 13 and a discharge pipe 14. The fertilizer box 10 is fixed above the middle part of the rack 1, and is used for placing fertilizer inside. The two hoppers 11 are respectively fixed on two sides of the bottom of the fertilizer box 10 and communicated with the interior of the fertilizer box 10. The discharge box 12 is arranged at a position below the hopper 11, two feed inlets 15 are arranged on the upper end face of the discharge box 12, two discharge outlets 16 are arranged on the lower end face of the discharge box, and the two discharge outlets 16 are respectively opposite to the two feed inlets 15. The bent pipes 13 are arranged in one-to-one correspondence with the hoppers 11, one end of each bent pipe is communicated with the corresponding hopper 11, and the other end of each bent pipe horizontally extends for a preset distance and then extends downwards and is communicated with one of the feed inlets 15. The discharge pipes 14 are provided with two, the upper end of each discharge pipe 14 is communicated with one discharge hole 16, and the other end of each discharge pipe extends downwards obliquely towards the outer side of the machine frame 1 to the upper part of one seed ditch. A diversion screw rod 17 for conveying the fertilizer inside the fertilizer box 10 to the two hoppers 11 is rotatably arranged in the fertilizer box 10, and a conveying screw rod 18 for conveying the fertilizer inside the hopper 11 to the discharge box 12 through the corresponding bent pipe 13 is rotatably arranged in each hopper 11. As shown in fig. 7, a baffle plate 19 is rotatably disposed in the discharging box 12, and two through holes 20 for communicating the discharging port 16 and the feeding port 15 which are opposite to each other up and down are disposed on the baffle plate 19. A sheave mechanism 60 for intermittently driving the blocking disc 19 to rotate is arranged outside the discharging box 12. The geneva gear 60 includes a geneva gear 21 and a notch dial 22. The baffle disc 19 is rotatably arranged in the discharging box 12 through a vertical grooved wheel shaft, and the lower end of the grooved wheel shaft extends to the lower part of the discharging box 12. The grooved wheel 21 is fixedly sleeved at the lower end of the grooved wheel shaft, the notch drive plate 22 is rotatably installed on the frame 1 and corresponds to the outer side of the grooved wheel 21, and the grooved wheel 21 is pushed by the continuously rotating notch drive plate 22 in a clearance manner.

As shown in fig. 8, the stem cutting mechanism 56 includes a cutting push rod 23, a cutting motor 24, a cutting box 25 and a transmission. The cutting push rod 23 is vertically arranged at the top of the rear end of the rack 1 in a manner of sliding up and down. The cutting motor 24 is fixed at the lower end of the cutting push rod 23, and the output end of the cutting motor is sleeved with a cutting disc 26. The cutting box 25 is fixed on the frame 1 and corresponds to the lower part of the cutting disc 26, two cutting stations are arranged in the cutting box, and two cutting holes 27 communicated with the cutting stations are arranged on the side wall of the cutting box 25. The two posture adjusting mechanisms 57 are respectively arranged on the frame 1 and correspond to positions below the two cutting stations, and the bottom of the cutting box 25 is opened so that the two cutting stations are respectively communicated with the two posture adjusting mechanisms 57. The transmission device is arranged on the frame 1 corresponding to the upper end of the cutting push rod 23, and is connected with and drives the cutting push rod 23 to move up and down repeatedly. The transmission means comprise a push gear 28 and a transmission gear 29. A cutting chute 30 for the cutting push rod 23 to slide up and down is arranged on the frame 1 corresponding to the middle of the cutting push rod 23. Cutting push rod 23 upper end level is equipped with promotes groove 31, promote the rotatable installation of gear 28 in just corresponding in frame 1 the position of cutting push rod 23 upper end promote the gear 28 lateral part and be close to the position at edge and be equipped with the card and go into promote the round pin axle 32 in groove 31. The transmission gear 29 is rotatably mounted on the frame 1, and is engaged with and drives the pushing gear 28 to rotate.

As shown in fig. 9-11, the posture adjusting mechanism 57 includes a seed box 34, a buffer 35, a seed selecting wheel 36 and a seed selecting frame 37. Seed box 34 sets up in frame 1 and corresponding cutting station below position, its top is opened to be set up in order to communicate corresponding cutting station the bottom level of seed box 34 is equipped with and breeds stem 3 assorted seed outlet. The buffer member 35 is rotatably provided at an upper portion inside the seed container 34 and serves to buffer the seed stalks 3 falling down. The seed selection wheel 36 is rotatably arranged on the frame 1 and corresponds to the position below the seed outlet, the seed selection frame 37 is fixed on the frame 1 and corresponds to the position below the seed selection wheel 36, and the seed selection wheel 36 is obliquely arranged on the seed selection frame 37 by rotating the seed stem 3 which is taken one by one and falls down from the seed outlet. The buffer member 35 includes a buffer shaft and four buffer plates. The buffer shaft is rotatably arranged at the upper part in the seed box 34, four buffer plates are opposite to each other in pairs to form a cross structure and are fixed on the buffer shaft, and a single falling seed stem 3 is received and buffered between every two adjacent buffer plates. The seed selecting wheel 36 is a cylindrical structure, and the side wall of the seed selecting wheel is axially provided with a clamping groove 38 for clamping the seed stems 3 falling from the seed outlet one by one. The seed selecting frame 37 is of a fan-shaped frame structure, and a posture adjusting inlet which enables the seed stems 3 clamped by the clamping grooves 38 to fall into the seed selecting frame 37 and be clamped in the seed selecting frame 37 in an inclined manner is horizontally arranged on the upper side of the seed selecting frame 37. The front side of the seed selecting frame 37 is vertically provided with a posture adjusting outlet for conveying the seed stem 3 pushed into a vertical shape to the corresponding clamping conveying mechanism 52. The bottom of the posture adjusting outlet is provided with a baffle 39, and the bottom of the baffle 39 is rotatably connected with the bottom of the posture adjusting outlet. As shown in fig. 12, an air cylinder 40 is provided on a side wall of the seed selecting rack 37, and an output end of the air cylinder 40 is connected to a side portion of the baffle 39.

As shown in fig. 9 to 11, the standing mechanism 58 includes a standing plate 41, a standing push rod 42, and a guide rod 43. The riser plates 41 are located in the respective seed trays 37. The supporting push rod 42 is a Z-shaped structure, the upper part of the supporting push rod is installed on the machine frame 1 in a front-back sliding manner and corresponds to the front upper side of the corresponding seed selecting frame 37, and the lower part of the supporting push rod freely penetrates into the corresponding seed selecting frame 37 backwards and is connected with the supporting plate 41. The standing plate 41 is a semi-arc block structure which is bent forwards and is vertically arranged along the axial direction and matched with the seed stem 3, wraps the rear side of the lower part of the seed stem 3 and pushes the inclined seed stem 3 to be vertical at the posture adjusting outlet under the driving of the standing push rod 42. The frame 1 is provided with a front and a rear supporting chutes 44 corresponding to the upper part of the supporting push rod 42 for the supporting push rod 42 to slide back and forth. An annular guide rail 45 is arranged on the outer side of the middle position of the upper part of the erection push rod 42. One end of the guide rod 43 is hinged to the middle of the upper part of the erection push rod 42 and corresponds to the position inside the guide rail 45, and the other end of the guide rod is slidably positioned in the guide rail 45 to limit the erection push rod 42 to slide back and forth.

As shown in fig. 13 and 14, the gripper conveyor 52 includes two housings 46 and two chains 47. The two shells 46 are relatively fixed on the rack 1 and correspond to the positions of the posture adjusting outlets, the front ends of the two shells 46 are located at two sides of the corresponding posture adjusting outlets, and the rear ends of the two shells 46 extend backwards for a preset distance. A driven gear 48 and a driving gear 49 are rotatably mounted in each of the housings 46 in a front-rear direction, respectively, and the driven gear 48 and the driving gear 49 in the same housing 46 are linked by a chain 47. A plurality of elastic clamping pieces 50 extending to the outer side of the corresponding housing 46 are uniformly mounted on each chain 47, and the elastic clamping pieces 50 on the two chains 47 are arranged in a one-to-one correspondence manner. As shown in fig. 15, openings are provided on the seed selecting rack 37 and at two sides corresponding to the posture adjusting outlet, and two corresponding elastic clamping members 50 respectively enter the posture adjusting outlet through the two openings as the chain 47 rotates backward and clamp the vertical seed stem 3 to be conveyed backward along the corresponding seed furrow.

As shown in fig. 16, the covering mechanism 33 includes two disks 51. The two disks 51 are respectively and oppositely fixed at the bottom of the rack 1 and correspond to the rear parts of the corresponding clamping and conveying mechanisms 52, the distance between the two disks 51 is gradually reduced from front to back, and then the soil on two sides of the seed ditch is pushed into the seed ditch to be backfilled along with the forward walking of the rack 1.

As shown in fig. 1, the sowing machine further includes a tractor 53. The front end of the frame 1 is connected to the rear end of the tractor 53, and the output shaft of the tractor 53 is respectively connected to and drives the rotary tillage ridging mechanism 54, the fertilizing mechanism 55, the stem cutting mechanism 56, the posture adjusting mechanism 57, the standing mechanism 58 and the clamping and conveying mechanism 52, specifically: the output shaft of the tractor 53 is connected to the rotary tillage shaft 6 of the rotary tillage ridging mechanism 54, the diversion screw 17 of the fertilizing mechanism 55, the material conveying screw 18, the notch dial 22, the transmission gear 29 of the stem cutting mechanism 56, the seed selection wheel 36 of the posture adjustment mechanism 57, the erection push rod 42 of the erection mechanism 58 and the driving gear 49 of the clamping conveying mechanism 52 through related power transmission mechanisms such as a gear mechanism, a worm gear mechanism and the like, so as to provide power for the tillage ridging mechanism 54, the fertilizing mechanism 55, the stem cutting mechanism 56, the posture adjustment mechanism 57, the erection mechanism 58 and the clamping conveying mechanism 52, and enable the tillage ridging mechanism 54, the fertilizing mechanism 55, the stem cutting mechanism 56, the posture adjustment mechanism 57, the.

The following is a complete description of the operation of the seeding machine:

first the corresponding fertilizer is added to the fertilizer box 10 and then one person drives the tractor 53, as shown in fig. 19, and the other person sits on the seat 59 of the frame 1 and carries a certain amount of cassava, which is responsible for inserting two cassava into the cutting box 25 through the cutting hole 27 at a time. Then the tractor 53 is started, on one hand, the tractor 53 pulls the frame 1 to move forwards, and on the other hand, the tractor 53 drives the ploughing and ridging mechanism 54, the fertilizing mechanism 55, the stem cutting mechanism 56, the posture adjusting mechanism 57, the standing mechanism 58 and the clamping and conveying mechanism 52 to operate through the output shaft. In the process that the tractor 53, namely the frame 1, moves forward, the rotary tillage ridging mechanism 54, the fertilizing mechanism 55, the stem cutting mechanism 56, the posture adjusting mechanism 57, the standing mechanism 58, the clamping and conveying mechanism 52 and the soil covering mechanism 33 respectively complete the following work:

(1) rotary tillage ridging mechanism

An output shaft of the tractor 53 drives the rotary tillage shaft 6 to rotate through a power transmission mechanism, the rotary tillage cutter head 8 and the rotary tillage cutter 9 rotate synchronously, and soil is turned and piled to form ridges towards the middle of the rotary tillage shaft 6 under the rotation of the rotary tillage cutter head 8 and the rotary tillage cutter 9. In addition, the base 5 grinds the piled ridge flat in the process of forward travel, and the furrow opener 7 opens two seed furrows for sowing on the ridge in the process of forward travel.

(2) Fertilizing mechanism

The output shaft of the tractor 53 drives the diversion screw rod 17, the material conveying screw rod 18 and the notch drive plate 22 to rotate through a power transmission mechanism. The diversion screw rods 17 rotate to extrude the fertilizer in the fertilizer box 10 downwards into the two hoppers 11, and the material conveying screw rods 18 rotate to extrude and convey the fertilizer in the corresponding hoppers 11 into the corresponding bent pipes 13 and downwards convey the fertilizer into the discharge boxes 12 through the bent pipes 13. The notch drive plate 22 rotates the intermittent drive sheave 21 to rotate, so that the baffle disc 19 in the discharging box 12 synchronously and intermittently rotates. Because the baffle disc 19 is provided with the through hole 20 which enables the feed inlet 15 to be communicated with the discharge outlet 16, the baffle disc 19 intermittently rotates to enable the feed inlet 15 to be continuously communicated with and isolated from the discharge outlet 16, and finally fertilizer in the discharge box 12 can be put into the seed ditch from the discharge pipe 14 according to preset requirements.

(3) Stem cutting mechanism

The output shaft of the tractor 53 drives the transmission gear 29 to rotate through the power transmission mechanism, and the gear 29 drives the pushing gear 28 to rotate after rotating. The rotation of the push gear 28 causes the cutting push rod 23 to move up and down repeatedly. Meanwhile, the cutting motor 24 drives the cutting disc 26 to rotate, so that the cutting disc 26 rotates while repeatedly moving up and down, and when the cutting disc 26 moves downwards into the cutting box 25, the cutting disc will cut two cassava slices inserted into the cutting box 25 into seed stems 3 with a certain length. The two seed stems 3 which are finally cut fall into the two seed boxes 34 of the posture adjusting mechanism 57 respectively under the action of the self gravity.

(4) Posture adjusting mechanism

The output shaft of the tractor 53 drives the seed selection wheel 36 to rotate through a power transmission mechanism. The seed stem 3 falling into the seed box 34 is received and buffered by the buffer 35 to avoid the seed stem 3 from being damaged, and the seed stem 3 continues to fall horizontally along with the rotation of the buffer 35 and finally gathers at the seed outlet of the seed box 34. The seed selection wheel 36 rotates under the seed outlet of the seed box 34, and when the seed selection wheel 36 rotates to the clamping groove 38 to be vertically opposite to the seed outlet of the seed box 34, the seed stem 3 at the lowest part of the seed outlet of the seed box 34 falls into the clamping groove 38 to be taken. With the continuous rotation of the seed selecting wheel 36, when the clamping groove 38 is opposite to the posture adjusting inlet of the seed selecting frame 37 up and down, the taken seed stem 3 falls into the seed selecting frame 37. Because the seed selection frame 37 is of a fan-shaped frame structure, the two ends of the seed stem 3 can vertically abut against different positions in the seed selection frame 37 after falling into the seed selection frame 37, namely, the seed stem 3 is in the seed selection frame 37 in an inclined state, and the horizontal seed stem 3 is adjusted to be in the inclined state.

(5) Erecting mechanism

The output shaft of the tractor 53 drives the erection push rod 42 to slide back and forth in a reciprocating manner through a power transmission mechanism. When the standing push rod 42 slides backwards, it will push the lower part of the seed stem 3 backwards through the standing plate 41, when the lower part of the seed stem 3 touches the baffle plate 19 (initially vertical), the standing plate 41 and the baffle plate 19 will block the lower part of the seed stem 3, and at the same time, the upper part of the seed stem 3 will swing backwards to change the seed stem 3 from the inclined state to the vertical state, completing the adjustment of the inclined seed stem 3 to the vertical state, as shown in fig. 17 and 18.

(6) Clamping and conveying mechanism

The output shaft of the tractor 53 drives the two driving gears 49 to rotate backwards through the power transmission mechanism, and the two driving gears 49 rotate and then drive the two chains 47 to rotate backwards. After the two chains 47 rotate, the clamping ends of the two opposite elastic clamping pieces 50 respectively reach the front side of the upper end of the seed stem 3 from the openings at the two sides of the posture adjusting outlet, and along with the continuous rotation of the two chains 47, the clamping ends of the two opposite elastic clamping pieces 50 clamp the upper end of the seed stem 3. After the seed shaft 3 is clamped, the air cylinder 40 operates and pushes the baffle 39 flat, preventing the baffle 39 from obstructing the backward feeding of the seed shaft 3. The seed stem 3 finally clamped is conveyed to the rear of the seed selection frame 37 through the posture adjusting outlet along with the rotation of the chain 47, when the seed stem 3 is conveyed to the rear end between the two shells 46, the two opposite elastic clamping pieces 50 are separated and moved forwards, so that the seed stem 3 is loosened, and finally the seed stem 3 is inserted into the position where fertilizer is applied in the seed ditch in a vertical state.

(7) Earthing mechanism

The two discs 51 advance synchronously with the forward advance of the frame 1 and backfill the soil on both sides of the seed furrow to bury the seed stem 3 during the advancing process. By this, one duty cycle ends.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A multifunctional whole-rod cassava precision seeder is characterized by comprising a rack (1), a rotary tillage ridging mechanism (54), a fertilizing mechanism (55), a stem cutting mechanism (56), two posture adjusting mechanisms (57), two standing mechanisms (58), two clamping and conveying mechanisms (52) and two soil covering mechanisms (33); the bottoms of the two sides of the rack (1) are provided with rollers (2) for walking; the rotary tillage ridging mechanism (54) is arranged at the front part of the frame (1) and is used for turning and piling soil into ridges and then forming two longitudinal seed ditches on the ridges; the fertilizing mechanism (55) is arranged in the middle of the rack (1) and intermittently conveys fertilizers to the seed furrows; the stem cutting mechanism (56) is arranged at the top of the rear end of the rack (1) and is used for cutting two cassava into two horizontal seed stems (3) and conveying the seed stems downwards; the two posture adjusting mechanisms (57) are arranged on the rack (1) and correspond to the lower parts of the stem cutting mechanisms (56), and are used for bearing the two horizontal seed stems (3) and adjusting the two horizontal seed stems (3) to be inclined above the two seed ditches respectively; the two standing mechanisms (58) and the two posture adjusting mechanisms (57) are arranged in a one-to-one correspondence manner, each standing mechanism (58) is arranged on the rack (1) and corresponds to the front of the corresponding posture adjusting mechanism (57), and the standing mechanisms push the seed stems (3) inclined on the corresponding posture adjusting mechanisms (57) backwards into a vertical shape; the two clamping and conveying mechanisms (52) and the two posture adjusting mechanisms (57) are arranged in a one-to-one correspondence manner, each clamping and conveying mechanism (52) is arranged on the rack (1) and corresponds to the rear of the corresponding posture adjusting mechanism (57), and is used for clamping the vertical seed stems (3) on the corresponding posture adjusting mechanism (57), conveying the seed stems backwards for a preset distance along the corresponding seed ditches and then releasing the seed stems, so that the seed stems (3) are vertically inserted into the positions, in which fertilizers are applied, in the corresponding seed ditches; two earthing mechanism (33) and two centre gripping conveying mechanism (52) one-to-one sets up, each earthing mechanism (33) sets up frame (1) bottom and corresponding centre gripping conveying mechanism's (52) rear, it is along with frame (1) is walked forward and is backfilled the soil of corresponding kind ditch both sides.

2. A multi-functional whole-rod cassava precision seeder according to claim 1, wherein the rotary tillage ridging mechanism (54) comprises a shield (4) and a base (5); the rotary tillage machine is characterized in that the protective cover (4) is fixed below the front part of the rack (1), a rotary tillage shaft (6) is transversely and rotatably arranged on the protective cover (4), and a plurality of rotary tillage pieces which turn soil into ridges through rotation are axially arranged on the rotary tillage shaft (6); the base (5) is fixed on the frame (1) and corresponds to the position behind the shield (4), and is of an inverted U-shaped structure which grinds the ridges formed by the stacked rotary tillage parts flat; furrow openers (7) for opening two longitudinal seed furrows on the ridge along with the forward walking of the rack (1) are vertically and downwards arranged on the two sides of the base (5);

the rotary tillage part comprises a rotary tillage cutter head (8) and rotary tillage cutters (9); the rotary tillage cutter head (8) is of a cross structure with four connecting ends, is axially and obliquely fixed on the rotary tillage shaft (6) relative to the rotary tillage shaft (6), and the inclination directions of the rotary tillage cutter heads (8) positioned on two sides of the middle point of the axis of the rotary tillage shaft (6) are opposite; each the link of rotary tillage blade disc (8) all is fixed with one rotary blade (9), rotary blade (9) are the circular arc structure of buckling, and it is same on two adjacent links on rotary tillage blade disc (8) the direction of buckling of rotary blade (9) is opposite.

3. The multi-functional whole-rod cassava precision seeder according to claim 1, wherein the fertilizing mechanism (55) comprises a fertilizer box (10), a hopper (11), a discharge box (12), an elbow (13) and a discharge pipe (14); the fertilizer box (10) is fixed above the middle part of the rack (1), and fertilizer is placed in the fertilizer box; two hoppers (11) are arranged and are respectively fixed on two sides of the bottom of the fertilizer box (10) and communicated with the interior of the fertilizer box (10); the discharge box (12) is arranged at the position below the position between the two hoppers (11), the upper end surface of the discharge box (12) is provided with two feed inlets (15), the lower end surface of the discharge box is provided with two discharge outlets (16), and the two discharge outlets (16) are respectively arranged opposite to the two feed inlets (15) up and down; the bent pipes (13) are arranged in one-to-one correspondence with the hoppers (11), one end of each bent pipe is communicated with the corresponding hopper (11), and the other end of each bent pipe extends horizontally for a preset distance and then extends downwards and is communicated with one of the feed inlets (15); the number of the discharge pipes (14) is two, the upper end of each discharge pipe (14) is communicated with one discharge hole (16), and the other end of each discharge pipe obliquely extends downwards to the upper part of one seed ditch towards the outer side of the rack (1);

a diversion screw rod (17) for conveying fertilizer inside the fertilizer box (10) into the two hoppers (11) is rotatably arranged in the fertilizer box, and a material conveying screw rod (18) for conveying fertilizer inside the hopper (11) into the discharge box (12) through the corresponding bent pipe (13) is rotatably arranged in each hopper (11); a baffle disc (19) is rotatably arranged in the discharge box (12), and two through holes (20) for communicating the discharge hole (16) and the feed hole (15) which are opposite up and down are formed in the baffle disc (19); a sheave mechanism (60) for intermittently driving the baffle disc (19) to rotate is arranged outside the discharge box (12);

the sheave mechanism (60) comprises a sheave (21) and a notch drive plate (22); the baffle disc (19) is rotatably arranged in the discharging box (12) through a vertical grooved pulley shaft, and the lower end of the grooved pulley shaft extends to the lower part of the discharging box (12); the grooved pulley (21) is fixedly sleeved at the lower end of the grooved pulley shaft, the notch drive plate (22) is rotatably installed on the frame (1) and corresponds to the outer side of the grooved pulley (21), and the grooved pulley (21) is pushed by the continuously rotating notch drive plate (22) in a clearance mode.

4. The multi-functional whole rod type cassava precision seeder according to claim 1, wherein the stem cutting mechanism (56) comprises a cutting push rod (23), a cutting motor (24), a cutting box (25) and a transmission device; the cutting push rod (23) is vertically arranged at the top of the rear end of the rack (1) in a vertically sliding manner; the cutting motor (24) is fixed at the lower end of the cutting push rod (23), and the output end of the cutting motor is sleeved with a cutting disc (26); the cutting box (25) is fixed on the rack (1) and corresponds to the lower part of the cutting disc (26), two cutting stations are arranged in the cutting box, and two cutting holes (27) communicated with the cutting stations are formed in the side wall of the cutting box (25); the two posture adjusting mechanisms (57) are respectively arranged on the rack (1) and correspond to positions below the two cutting stations, and the bottom of the cutting box (25) is opened so that the two cutting stations are respectively communicated with the two posture adjusting mechanisms (57);

the transmission device is arranged on the frame (1) and corresponds to the position of the upper end of the cutting push rod (23), and is connected with and drives the cutting push rod (23) to move up and down repeatedly.

5. A multi-functional precision planter for cassava according to claim 4, in which the transmission means comprise a push gear (28) and a transmission gear (29); a cutting chute (30) for the cutting push rod (23) to slide up and down is arranged on the frame (1) corresponding to the middle part of the cutting push rod (23); a pushing groove (31) is horizontally formed in the upper end of the cutting push rod (23), the pushing gear (28) is rotatably mounted on the rack (1) and corresponds to the position of the upper end of the cutting push rod (23), and a pin shaft (32) clamped into the pushing groove (31) is arranged on the side part of the pushing gear (28) and close to the edge; the transmission gear (29) is rotatably arranged on the frame (1) and is meshed with and drives the pushing gear (28) to rotate.

6. The multi-functional whole-rod cassava precision seeder according to claim 4, wherein the posture adjusting mechanism (57) comprises a seed box (34), a buffer (35), a seed selecting wheel (36) and a seed selecting frame (37); the seed box (34) is arranged on the rack (1) and corresponds to the position below the corresponding cutting station, the top of the seed box is opened to be communicated with the corresponding cutting station, and a seed outlet matched with the seed stem (3) is horizontally arranged at the bottom of the seed box (34); the buffer piece (35) is rotatably arranged at the upper part in the seed box (34) and is used for buffering the falling seed stems (3); the seed selecting wheel (36) is rotatably arranged on the rack (1) and corresponds to the position below the seed outlet, the seed selecting frame (37) is fixed on the rack (1) and corresponds to the position below the seed selecting wheel (36), and the seed selecting wheel (36) is rotated to take the seed stems (3) falling from the seed outlet one by one and place the seed stems on the seed selecting frame (37) in an inclined manner;

the buffer piece (35) comprises a buffer shaft and four buffer plates; the buffer shaft is rotatably arranged at the upper part in the seed box (34), four buffer plates are opposite to each other in pairs to form a cross structure and fixed on the buffer shaft, and a single falling seed stem (3) is received and buffered between two adjacent buffer plates;

the seed selecting wheel (36) is of a cylindrical structure, and clamping grooves (38) for clamping the seed stems (3) falling from the seed outlet one by one are axially arranged on the side wall of the seed selecting wheel; the seed selecting frame (37) is of a fan-shaped frame structure, and a posture adjusting inlet which enables the seed stems (3) clamped by the clamping grooves (38) to fall into the seed selecting frame (37) and be clamped in the seed selecting frame (37) in an inclined mode is horizontally arranged on the upper side of the seed selecting frame (37); a posture adjusting outlet for conveying the vertically pushed seed stems (3) to the corresponding clamping and conveying mechanism (52) is vertically arranged at the front side of the seed selecting frame (37); a baffle (39) is arranged at the bottom of the posture adjusting outlet, and the bottom of the baffle (39) is rotatably connected with the bottom of the posture adjusting outlet; an air cylinder (40) is arranged on the side wall of the seed selecting frame (37), and the output end of the air cylinder (40) is connected with the side part of the baffle plate (39).

7. The multifunctional whole-rod cassava precision seeder according to claim 6, wherein the standing mechanism (58) comprises a standing plate (41), a standing push rod (42) and a guide rod (43); the standing plates (41) are positioned in the corresponding seed selection frames (37); the erection push rod (42) is of a Z-shaped structure, the upper part of the erection push rod can be installed on the rack (1) in a front-back sliding manner and corresponds to the front upper side of the corresponding seed selection frame (37), and the lower part of the erection push rod is backwards freely inserted into the corresponding seed selection frame (37) and is connected with the erection plate (41); the supporting plate (41) is a semi-arc block structure which is bent forwards and is matched with the seed stem (3) and is vertically arranged in the axial direction, wraps the rear side of the lower part of the seed stem (3) and pushes the inclined seed stem (3) to be vertical at the posture adjusting outlet backwards under the driving of the supporting push rod (42);

the front and the back of the upper part of the erection push rod (42) corresponding to the rack (1) are respectively provided with an erection sliding groove (44) for the erection push rod (42) to slide back and forth; an annular guide rail (45) is arranged on the outer side of the middle position of the upper part of the erection push rod (42); one end of the guide rod (43) is hinged to the middle of the upper part of the erection push rod (42) and corresponds to the position inside the guide rail (45), and the other end of the guide rod can be slidably positioned in the guide rail (45) to limit the erection push rod (42) to slide back and forth.

8. The multi-functional precision seeder of whole stick cassava according to claim 7, wherein the clamp conveyor mechanism (52) comprises two housings (46) and two chains (47); the two shells (46) are relatively fixed on the rack (1) and correspond to the positions of the corresponding posture adjusting outlets, the front ends of the two shells (46) are positioned at two sides of the corresponding posture adjusting outlets, and the rear ends of the two shells (46) extend backwards for a preset distance; a driven gear (48) and a driving gear (49) are respectively rotatably mounted in each shell (46) in a front-back manner, and the driven gear (48) and the driving gear (49) in the same shell (46) are linked through a chain (47); a plurality of elastic clamping pieces (50) extending out of the corresponding shell (46) are uniformly arranged on each chain (47), and the elastic clamping pieces (50) on the two chains (47) are arranged in a one-to-one correspondence manner;

the seed selection frame (37) is provided with openings corresponding to two sides of the posture adjusting outlet, and the two corresponding elastic clamping pieces (50) rotate backwards along with the chain (47) and respectively enter the posture adjusting outlet through the two openings and clamp the vertical seed stems (3) to be conveyed backwards along the corresponding seed ditches.

9. A multi-functional whole-rod cassava precision seeder according to claim 1, wherein the covering mechanism (33) comprises two disks (51); the two disks (51) are respectively and relatively fixed at the bottom of the rack (1) and correspond to the rear of the clamping and conveying mechanism (52), the distance between the two disks (51) is gradually reduced from front to back, and then the soil on two sides of the seed ditch is pushed into the seed ditch to be backfilled along with the forward walking of the rack (1).

10. A multi-functional whole-stick cassava precision seeder according to any one of claims 1 to 9, further comprising a tractor (53); the front end of frame (1) is connected the rear end of tractor (53), and the output shaft of tractor (53) is connected respectively and is driven rotary tillage ridging mechanism (54), fertilizing mechanism (55), stem cutting mechanism (56), accent appearance mechanism (57), hold up mechanism (58) and centre gripping conveying mechanism (52).

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